Pass the NetworkChangeNotifier to HostResolver.

This requires the following refactors:
  (1) NetworkChangeNotifier moves out of HttpNetworkSession into IOThread.
  (2) HostResolver gets initialized with NetworkChangeNotifier.
  (3) NetworkChangeNotifier needs to get passed into HttpCache and HttpNetworkSession (required updating a lot of files).
  (4) NetworkChangeNotifier is no longer reference counted.  It is owned by IOThread.
  (5) IOThread gains a new struct: Globals.  It can only be used on the io thread.
  (6) ChromeURLRequestContextFactory uses IOThread::Globals to initialize ChromeURLRequest objects with the host resolver and network change notifier.
BUG=26159

Review URL: http://codereview.chromium.org/552117

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@38052 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 7 insertions, 2 deletions

diff --git a/net/http/http_network_layer.h b/net/http/http_network_layer.h
index 4dbf9a4..38c10c7 100644
--- a/net/http/http_network_layer.h
+++ b/net/http/http_network_layer.h
@@ -17,15 +17,17 @@ class ClientSocketFactory;
 class FlipSessionPool;
 class HostResolver;
 class HttpNetworkSession;
+class NetworkChangeNotifier;
 class ProxyInfo;
 class ProxyService;
 class SSLConfigService;
 
 class HttpNetworkLayer : public HttpTransactionFactory {
  public:
-  // |socket_factory|, |proxy_service| and |host_resolver| must remain valid
-  // for the lifetime of HttpNetworkLayer.
+  // |socket_factory|, |network_change_notifier|, |proxy_service| and
+  // |host_resolver| must remain valid for the lifetime of HttpNetworkLayer.
   HttpNetworkLayer(ClientSocketFactory* socket_factory,
+                   NetworkChangeNotifier* network_change_notifier,
                    HostResolver* host_resolver, ProxyService* proxy_service,
                    SSLConfigService* ssl_config_service);
   // Construct a HttpNetworkLayer with an existing HttpNetworkSession which
@@ -36,6 +38,7 @@ class HttpNetworkLayer : public HttpTransactionFactory {
   // This function hides the details of how a network layer gets instantiated
   // and allows other implementations to be substituted.
   static HttpTransactionFactory* CreateFactory(
+      NetworkChangeNotifier* network_change_notifier,
       HostResolver* host_resolver,
       ProxyService* proxy_service,
       SSLConfigService* ssl_config_service);
@@ -65,6 +68,8 @@ class HttpNetworkLayer : public HttpTransactionFactory {
   // The factory we will use to create network sockets.
   ClientSocketFactory* socket_factory_;
 
+  NetworkChangeNotifier* network_change_notifier_;
+
   // The host resolver and proxy service that will be used when lazily
   // creating |session_|.
   scoped_refptr<HostResolver> host_resolver_;